期刊
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
卷 76, 期 -, 页码 115-123出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesa.2015.04.015
关键词
Polymer-matrix composites (PMCs); Mechanical properties; Electrospinning; Shape memory nanofibers
资金
- National Key Technology RAMP
- D Program project of China [2012BAI171300: 2012B2012BAI17B06]
- Shenzhen Biological, New Energy, New Material Industry Development Special Funds [JC201104210132A]
- Hong Kong Research Grants Council project [RGC-GRF/516212]
In the present study, we prepared a series of graphene oxide (GO) filled shape memory polyurethane (SMPU) nanofibers and systematically investigated the morphological, thermal and mechanical properties, surface wettability, and the shape memory effect (SME) followed by the proposed programming model. The results show that GO can be well dispersed within the SMPU matrix, and the introduction of GO significantly improves the mechanical strength, surface wettability, and thermal stability of the SMPU. Compared with pristine SMPU nanofibrous mats, the prepared SMPU/GO nanofibrous mats have better SME and lower thermal shrinkage. When the loading amount of GO increased to 4.0 wt%, the thermal shrinkage ratio (R-ts) of composite nanofibrous mats could be as low as 4.7 +/- 0.3%, while the average fixation ratio (R-f) and recovery ratio (R-r) could be as high as 92.1% and 96.5%, respectively. The study indicates that GO is a desirable reinforcing filler for preparing shape memory nanofibers with improved properties. (C) 2015 Elsevier Ltd. All rights reserved.
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